MD
Mary Duncan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mcdowell-County, North Carolina
Our Model Tree links this Mary Duncan across the 1920, 1930 and 1940 US Censuses in Mcdowell-County, North Carolina (XGBoost, ~Confirmed), with identified parents James & James — first a daughter (b.~1911), then head of a 9-person household.
Age 29
b. ~1911
Female
Daughter
Born: North Carolina
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mcdowell-County, North Carolina |
| Surname | Duncan |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | North Carolina |
| 1935 Residence (City) | Marion |
| 1935 Residence (County) | McDowell |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same Place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
| Township / Ward | Marion |
| Est. Birth Year | ~1911 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Duncan | Daughter | — | 29 | ~1911 |
| Lizzie Reece | Daughter | — | 20 | ~1920 |
| Mattie Duncan | Daughter | — | 16 | ~1924 |
| James Duncan | Head | — | 57 | ~1883 |
| Ernest Ogle | Other | — | 9 | ~1931 |
| Arthur Reece | Other | — | 29 | ~1911 |
| Katie Ogle | Other | — | 6 | ~1934 |
| Minnie Ogle | Other | — | 11 | ~1929 |
| Willie Duncan | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Mcdowell, North …
Daughter, age 9
Mcdowell, North Carolina · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Mary B |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | North Carolina |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Can Read | Yes |
| Speaks English | Yes |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1930
Mcdowell, North …
Daughter, age 19
Mcdowell, North Carolina · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | North Carolina |
| Age at First Marriage | 14 |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | North Carolina |
| Can Read/Write | Yes |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
1940
Mcdowell-County, North …
Daughter, age 29
Mcdowell-County, North Carolina · implied b. ~1911 — 9 household members
| Surname | Duncan |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | North Carolina |
| 1935 Residence (City) | Marion |
| 1935 Residence (County) | McDowell |
| Highest Grade | 6 |
| 1935 Residence | Same Place |
| Birth State | North Carolina |
| Birth Country | United States |
| Birthplace (normalized) | north carolina |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Duncan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Duncan (~0.92 confidence) and father James Duncan (~0.92 confidence) and mother Willie Duncan (~0.92 confidence) and mother Willie Duncan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Duncan
b. ~1883
Source father
● Household
· direct · ~0.92
Father
James Duncan
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Willie Duncan
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Willie Duncan
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Duncan
Daughter · 1940 · age 29 · b. ~1911 · North Carolina
★ You are viewing this record
Sibling
Mattie Duncan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lizzie Reece
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Mcdowell-County, North Carolina
Open full size
1940 US Federal Census — Mcdowell-County, North Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02938-00355)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Larry Burton Gregory | 54 | Head | Weave Room | North Carolina |
| 42 | Mary B. Gregory | 37 | Wife | — | North Carolina |
| 43 | Lanie B. Gregory | 22 | daughter | — | South Carolina |
| 44 | Thelma Gregory | 10 | granddaughter | — | North Carolina |
| 45 | Betty Jean Gregory | 2 | granddaughter | — | North Carolina |
| 46 | Hubert Larry Gregory | 1 | grandson | — | North Carolina |
| 47 | James A. Gregory | 15 | son | — | North Carolina |
| 48 | James A. Duncan | 57 | Head | Card Room | North Carolina |
| 49 | Willie D. Duncan | 57 | wife | — | North Carolina |
| 50 | Mary Duncan THIS PERSON | 29 | daughter | — | North Carolina |
| 51 | Mattie Jane Duncan | 16 | daughter | — | North Carolina |
| 52 | Minnie Lee Ogle | 11 | granddaughter | — | North Carolina |
| 53 | Ernest Ogle | 9 | grandson | — | North Carolina |
| 54 | Katie Mae Ogle | 6 | granddaughter | — | North Carolina |
| 55 | Lizzie Kat. Reece | 20 | daughter | — | North Carolina |
| 56 | Arthur Reece | 29 | son-in-law | Stack Driver | Virginia |
| 57 | Bird S. Honeycutt | 55 | Head | Carpenter | North Carolina |
| 58 | Frances Mary Honeycutt | 54 | wife | — | North Carolina |
| 59 | Charlie Honeycutt | 58 | Head | Laborer | North Carolina |
| 60 | Minnie Honeycutt | 45 | wife | — | North Carolina |
| 61 | Ruby Honeycutt | 10 | daughter | — | North Carolina |
| 62 | Rachel Honeycutt | 6 | daughter | — | North Carolina |
| 63 | Raymond R. Swinney | 32 | Head | Finishing Room | North Carolina |
| 64 | Essie D. Swinney | 32 | wife | — | North Carolina |
| 65 | Nicklas E. Swinney | 9 | son | — | North Carolina |
| 66 | Josetta Swinney | 8 | daughter | — | North Carolina |
| 67 | Barney J. Harding | 40 | Head | Hacker | North Carolina |
| 68 | Ida Sue Harding | 44 | wife | — | North Carolina |
| 69 | Irene Harding | 23 | daughter | Spinning Room | North Carolina |
| 70 | William Jasper Harding | 25 | son | Spinning Room | North Carolina |
| 71 | Katie Harding | 23 | daughter | Spinning Room | Kentucky |
| 72 | Marie Harding | 14 | daughter | Spinning Room | North Carolina |
| 73 | Janet Harding | 12 | daughter | — | North Carolina |
| 74 | George Ray Harding | 6 | grandson | — | North Carolina |
| 75 | Mary Ellen Harding | 5 | granddaughter | — | North Carolina |
| 76 | Pantha Davidson | 52 | Head | Sewing Room | North Carolina |
| 77 | Louise Davidson | 16 | daughter | — | North Carolina |
| 78 | Seletha Roland | 61 | Head | — | North Carolina |
| 79 | Caryole Roland | 11 | grandson | — | North Carolina |
| 80 | John M. Teague | 58 | Head | Manager | North Carolina |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)